艾利翁（西班牙语：Ayllón），是西班牙卡斯蒂利亚-莱昂塞戈维亚省的一个市镇。 总面积127平方公里，总人口1233人（2001年），人口密度10人/平方公里。

Ayllón is a municipality located in the province of Segovia, Castile and León, Spain. According to the 2007 census (INE), the municipality has a population of 1,243 inhabitants.

In 1411 a treaty, known as the Treaty of Ayllón, was signed between Portugal and Castile ending the wars of the Interregnum.